<template>
  <div>
      <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/Home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
        <el-row :gutter="20">
            <el-col :span='8'>
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodList">
                    <el-button slot="append" icon="el-icon-search" @click="getGoodList"></el-button>
                </el-input>
            </el-col>
            <el-col :span='4'>
                <el-button type="primary" @click="goAddpage">添加商品</el-button>
            </el-col>
        </el-row>

        <!-- table表格区域 -->
        <el-table :data="goodslist" border stripe>
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column label="商品名称" prop="goods_name"></el-table-column>
            <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
            <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
            <el-table-column label="创建时间" prop="add_time" width="140px">
                <template slot-scope="scope">
                    {{scope.row.add_time | dateFormat}}
                </template>
            </el-table-column>
            <el-table-column label="操作" width="130px">
                <template slot-scope="scope">
                    <el-button 
                        type="primary" 
                        icon="el-icon-edit" 
                        size="mini"
                        @click="editGoods(scope.row)"></el-button>
                    <el-button 
                        type="danger" 
                        icon="el-icon-delete" 
                        size="mini"
                        @click="removeById(scope.row.goods_id)"></el-button>
                </template>
            </el-table-column>
        </el-table>

        <!-- 分页区域 -->
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[5,10,15,20]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total"
            background>
        </el-pagination>

        <!-- 编辑对话框 -->
        <el-dialog
            title="编辑商品"
            :visible.sync="editDialogVisible"
            width="50%">
            <el-form :model="editGoodForm" :rules="editGoodFormRules" ref="editGoodFormRef" label-width="100px">
                <el-form-item label="商品名称：" prop="goods_name">
                    <el-input v-model="editGoodForm.goods_name"></el-input>
                </el-form-item>
                <el-form-item label="商品价格：" prop="goods_price">
                    <el-input v-model="editGoodForm.goods_price"></el-input>
                </el-form-item>
                <el-form-item label="商品数量：" prop="goods_number">
                    <el-input v-model="editGoodForm.goods_number"></el-input>
                </el-form-item>
                <el-form-item label="商品重量：" prop="goods_weight">
                    <el-input v-model="editGoodForm.goods_weight"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="edit">确 定</el-button>
            </span>
        </el-dialog>
    </el-card>
  </div>
</template>

<script>
export default {
    data(){
        return{
            /* 查询参数对象 */
            queryInfo:{
                query:'',
                pagenum:1,
                pagesize:10
            },
            /* 商品列表 */
            goodslist:[],
            /* 总数据条数 */
            total:0,
            editDialogVisible:false,
            goods_id:'',
            editGoodForm:{
                goods_name:'',
                goods_number:0,
                goods_price:0,
                goods_weight:0,
                goods_introduce:'',
                pics:[],
                attrs:[],
            },
            editGoodFormRules:{
                goods_name:[
                    {required:true,message:'请输入商品名称',trigger:'blur'}
                ],
                goods_price:[
                    {required:true,message:'请输入商品价格',trigger:'blur'}
                ],
                goods_number:[
                    {required:true,message:'请输入商品数量',trigger:'blur'}
                ],
                goods_weight:[
                    {required:true,message:'请输入商品重量',trigger:'blur'}
                ]
            }
        }
    },
    created(){
        this.getGoodList()
    },
    methods:{
        /* 根据分页获取对应的商品列表 */
        async getGoodList(){
            const {data:res} = await this.$http.get('goods/',{params:this.queryInfo})

            if(res.meta.status!==200)
                return this.$message.error('获取商品列表失败！')
            
            this.$message.success('获取商品列表成功！')
            console.log(res.data)
            this.goodslist=res.data.goods
            this.total=res.data.total
        },
        handleSizeChange(newSize){
            this.queryInfo.pagesize=newSize
            this.getGoodList()
        },
        handleCurrentChange(newPage){
            this.queryInfo.pagenum=newPage
            this.getGoodList()
        },
        async removeById(id){
            const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err=>err)

            if(confirmResult!=='confirm')
                return this.$message.info("已取消删除！")

            const {data:res} = await this.$http.delete(`goods/${id}`)

            if(res.meta.status!==200)
                return this.$message.error("删除失败！")
            
            this.$message.success("删除成功！")
            this.getGoodList() 
        },
        goAddpage(){
            this.$router.push('/goods/add')
        },
        /* 点击编辑按钮 */
        editGoods(row){
            this.editDialogVisible=true
            this.goods_id=row.goods_id
            this.editGoodForm={
                goods_name:row.goods_name,
                goods_number:row.goods_number,
                goods_price:row.goods_price,
                goods_weight:row.goods_weight,
            }
            console.log(row)
        },
        /* 点击确定按钮提交商品修改 */
        edit(){
            this.$refs.editGoodFormRef.validate(async valid=>{
                if(!valid)  return
                const {data:res} = await this.$http.put('goods/'+this.goods_id,{
                    goods_name:this.editGoodForm.goods_name,
                    goods_price:this.editGoodForm.goods_price,
                    goods_number:this.editGoodForm.goods_number,
                    goods_weight:this.editGoodForm.goods_weight,
                    /* 后端接口有问题，还需要传入goods_cat */
                    goods_cat:"1,2,3"
                })
                console.log(this.editGoodForm)
                console.log(res.meta)
                
                if(res.meta.status!==200)
                    return this.$message.error("编辑商品失败")

                this.$message.success("编辑商品成功")
                this.getGoodList()
                this.editDialogVisible=false
            })
        }
    }
}
</script>

<style scoped>

</style>